Rotary engine.



No. 783,847. PATENTED FEB. 28. 1905. G. F. ULRICH.

ROTARY ENGINE.

APPLIUATIOH FILED 11130.10, 1904.

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WITNESSES: INVENTOR 651211167]? Z/Zzicfi v By W ATTORNEYS PATENTED FEB. 28, 1905.

0. F. ULRICH.

ROTARY ENGINE.

APPLICATION FILED 3030.10, 1904.

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PATENTED FEB. 28, 1905.

C. P. ULRICH.

ROTARY ENGINE.

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SPECIFICATION forming part of Letters Patent No. 783,847, dated February 28, 1905.

Application filed December 10, 1904. Serial No. 236,265.

To t Lu/1,0772, if; m/ty concern.-

Be it known that l, CQNRAD FRIEDRICH ULRICH, a citizen of the United States, and a resident of New Haven, in the county of New Haven and State of Connecticut, have invented a new and Improved Rotary Engine, of which the following is a full, clear, and exact description.

This invention relates to improvements in rotary engines, the object being to provide a motor of this character of comparatively simple and inexpensive construction and by means of which the motive agent, such as steam, will be economically used.

l will describe a rotary engine embodying my invention and then point out the novel features in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure l is a sectional elevation of a rotary engine embodying my invention. Fig. 2 is a section on the line in a of Fig. 1. Fig. 3 is a section through a cam-easing employed. Figs. 4 and 5 are sectional views through one of the valves, showing the same in different positions. 6 is a section on the line ;1 of Fig. l, and Fig. 7 is another section through the camcasing.

Referring to the drawings, '1 designates the upright portion of the frame supported on the base 2, and also extended upright from the base is a standard 3,which provides a bearing for a shaft 4. Secured to the inner side of the upright portion 1 of the frame is the steam-chest or cylinder 5, the end wall or head of which is shown as concave on the outer side and convex on the inner side. Secured t0 the shaft t is a piston-blade 6, which is substan tially triangular in form or conforms to the interior of the cylinder 5, and also secured to the shaft 4 is a eam-casing 7, which projects over the cylinder and also over the uprightportion 1 of the frame, and within the portion projeetingover the cylinder and frame are flanges 8 9, the flange 8 having a curved or cam surface 10, while the flange 9 has a l cam-surface 11.

A pipe 12 leads into the por tion 1 of the frame to admit steam to a plurality of inlot-ports l3, and these ports, as will be hereinaftr'sr described, are successively closed to the admission of steam by means of a segmental projection let on the inner end of the shaft f. This projection therefore practically acts as a valve.

At suitable intervals one side of the upright portion 1 of the frame provided with recesses 15, in which valves 16 are arranged to turn. These valves are in the form of a halfsection of a cone, and obviously the recesses are of correspomling shape. The inner ends of the valves have pivotal bearings 17 in the frame member 1 and at theirouter ends are shafts 18, which extend through openings in theframe member 1 and connect with levers 19, having oppositelyextended arms 20 ll, provided, respectively, with rollers 22 The roller 22 is designed to engage against the edge and cam of the flange 8, while the roller 23 engages with the edge and cam of the liange 9. it will be seen in Fig. 7 that these flanges have straight edges 24: The levers are limited in their movements by stop-pins 2c 27, with which the arms 20 and 21 may ongage. Each valve 16 is provided with an er;- haust-port 28, and exhaust-pipes 29 lead from the recesses 15.

in the operation steam is admitted though the pipe 12 and passes through a port 13 to the rear side of the piston-blade (3. At this time through the rotary motion of the casing T the valve 16 immediately in the rear of the piston 6 will be turned into the ('rylinder 5, with its fiat face toward the piston. The valve will lit steam-tight in the piston-cylinder, and the and 16 will engage upon the ring 16', to which the piston is attached, thus preventing any escape of steam at this point. The cam-surfaces of the casing 7 will turn the other valves into their recesses, permitting the motive agent to exhaust through the ports 3.8 and pipes 29. The cam of the flange it serves to move the valves into abutment position, while the cam of the flange 9 moves the valves into exhaust position. Fig. l: shows the position of a valve when the piston is passing the same, and Fig. 5 shows a valve in position to serve as an exhaust and also as an abutment.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a rotary engine, a cylinder having a head convexed on its inner side, a piston-blade conforming to said convex inner side of the head, and an exhaust-con trolling valve mounted to swing into the cylinder to form an abutment.

2. In a rotary engine, a cylinder, a pistonblade arranged to rotate therein, a shaft on which the blade is mounted, aframe member having a vertical portion into which the shaft extends, the said frame member having inletports into the cylinder, a cut-ofi valve carried by said shaft, and valves arranged in said portion of the frame and serving both to control exhaust and as abutments.

3. A rotary engine comprising a shaft, a vertical frame member into which said shaft extends, a cylinder or steam-chest secured to the inner side of said frame member, inlet-ports leading through the frame member into said steam-chest, a part carried by the shaft for controlling said inlet-ports, the said member of the frame being provided at intervals with recesses, valves mounted to turn in said recesses and provided with ports, exhaust-pipes leading from said recesses, and means for rotating the valves to move them to exhaust position and also to abutment position.

4. A rotary engine comprising a shaft, a vertical frame member into which said shaft extends, a cylinder or steam-chest secured to the inner side of said frame member,the said frame member having inlet-ports leading into the cylinder, a part carried by the shaft for alternately closing said inlet-ports, the said frame member having recesses at intervals provided with exhaust-ports, valves arranged to rotate in said recesses and provided with exhaustports, a casing carried by the shaft, and cams on said casing for moving the valves into exhaust position and also into abutment position.

5. In a rotary engine, a shaft, an upright frame member into which said shaft extends,

the said frame member being provided with 5 recesses at its inner side and having exhaust: ports, semicylindrical tapered valves arranged to move into said recesses, said valves being provided with exhaust-ports, a cylinder secured to the inner side of the frame member and having a eoncaved head-Wall, shafts extended outward from the valves through the frame member, oppositely-extended arms on said shafts, rollers carried by the arms, a casing secured to the first-named shaft, flanges arranged in said casing, and cam-sections on said flanges for engaging with the said rollers.

6. In a rotary engine,a shaft, a piston-blade secured to said shaft, said blade being of substantially triangular form, a cylinder having 5 being in the form of a half-section of a cone, 7

and means for turning said valves to control the exhaust and also to serve as abutments.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CONRAD FRIEDRICH ULRICH.

Vitnesses:

ALDEN ULRICH, DAVID STRoUsE. 

